Phylogeography of Pinus armandii and its relatives: heterogeneous contributions of geography and climate changes to the genetic differentiation and diversification of Chinese white pines.
Phylogeography of Pinus armandii and its relatives: heterogeneous contributions of geography and climate changes to the genetic differentiation and diversification of Chinese white pines.
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华山松及其近缘植物的系统发育地理学：地理和气候变化对中国白松遗传分化和多样化的异质贡献
DOI：
10.1371/journal.pone.0085920
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Wang XQ
中科院分区：
文献类型：
--
作者：
Liu L;Hao ZZ;Liu YY;Wei XX;Cun YZ;Wang XQ
地理屏障和第四纪气候变化是驱动现存生物进化、物种形成和遗传结构的两大力量。在这项研究中，我们使用华山松和其他11个亚洲白色松（亚属松属Strobus亚组），探讨地理因素和更新世气候振荡对物种的影响，在中国南方，一个地区已知的植物特有现象和生物多样性的热点中心。利用叶绿体和线粒体DNA标记对华山松全范围的遗传变异模式进行了研究。结果表明，华山松具有较高的遗传多样性和明显的种群分化。利用cpDNA技术研究了中国大陆的三个地理分区，分别对应于秦岭-大巴山（QDM）、喜马拉雅-横断山（HHM）和云贵高原（YGP）。其断裂带位于青藏高原东南缘。QTP隆起引起的一系列巨大的山脉对遗传交换施加了重大的地理障碍。祖先单倍型的间断分布模式表明，一个大的连续的白色松种群可能已经存在从西南到亚热带中国。更新世冰川作用导致了亚热带物种的隔离和多样化。这两种台湾白色松与中国大陆的松有共同的祖先，它们的叶绿体是通过远距离的花粉传播从北亚松获得的。秦岭-大巴山、云贵高原、喜马拉雅-横断山和亚热带地区的白松种群具有明显的遗传分化模式，表明地理因素对白色松种群的遗传分化有重要作用。我们的研究描绘了一幅清晰的中国白色松的进化历史，并强调了地理和更新世气候波动的异质性的贡献，以极高的植物物种多样性和特有性在中国南方。
Geographic barriers and Quaternary climate changes are two major forces driving the evolution, speciation, and genetic structuring of extant organisms. In this study, we used Pinus armandii and eleven other Asian white pines (subsection Strobus, subgenus Pinus) to explore the influences of geographic factors and Pleistocene climatic oscillations on species in South China, a region known to be centers of plant endemism and biodiversity hotspots. Range-wide patterns of genetic variation were investigated using chloroplast and mitochondrial DNA markers, with extensive sampling throughout the entire range of P. armandii. Both cpDNA and mtDNA revealed that P. armandii exhibits high levels of genetic diversity and significant population differentiation. Three geographically distinct subdivisions corresponding to the Qinling-Daba Mountains (QDM), Himalaya-Hengduan Mountains (HHM) and Yungui Plateau (YGP) were revealed in mainland China by cpDNA. Their break zone was located in the southeastern margin of the Qinghai-Tibetan Plateau (QTP). A series of massive mountains, induced by the QTP uplift, imposed significant geographic barriers to genetic exchange. The disjunct distribution patterns of ancestral haplotypes suggest that a large continuous population of the white pines may have existed from southwest to subtropical China. Repeated range shifts in response to the Pleistocene glaciations led to the isolation and diversification of the subtropical species. The two Taiwanese white pines share a common ancestor with the species in mainland China and obtain their chloroplasts via long-distance pollen dispersal from North Asian pines. Distinct genetic patterns were detected in populations from the Qinling-Daba Mountains, Yungui Plateau, Himalaya-Hengduan Mountains, and subtropical China, indicating significant contributions of geographic factors to the genetic differentiation in white pines. Our study depicts a clear picture of the evolutionary history of Chinese white pines and highlights the heterogeneous contributions of geography and Pleistocene climatic fluctuations to the extremely high plant species diversity and endemism in South China.
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影响因子：
3.4
作者：
Gernandt, DS;López, GG;Liston, A
通讯作者：
Liston, A
影响因子：
5.8
作者：
Clark, MK;House, MA;Tang, W
通讯作者：
Tang, W
影响因子：
2.6
作者：
Excoffier, Laurent;Laval, Guillaume;Schneider, Stefan
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4.9
作者：
Aizawa, M.;Yoshimaruth, H.;Kaji, M.
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影响因子：
4.1
作者：
Cun, Yu-Zhi;Wang, Xiao-Quan
通讯作者：
Wang, Xiao-Quan